1 State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China 2 Wenzhou Research Institute of Pump and Valve Engineering, Lanzhou University of Technology, Wenzhou 325105, Zhejiang, China
Sb2O3 powders were prepared by high energy ball milling using polyethyleneglycol-6000, sodium dodecyl sulfate and OP-10 to modify the surface properties of the powder. The influence of Sb2O3 powders modified by various surface active agents on flame retardant properties of PVC composite materials was studied. The phase composition, morphology and the average particle size of the powders were characterized by XRD and TEM. The particle distribution and flame retardant properties of Sb2O3/PVC composite materials were studied by EDS, limiting oxygen index instrument and vertical burning test. The results show that nanometer Sb2O3 has good dispersion in the PVC matrix because of the higher space steric effect of organic film on the surface of nanometer Sb2O3 when polyethyleneglycol-6000 was used as the surface active agent. While the content of nanometer Sb2O3 is 1.26% in the PVC composite material, the oxygen index of the composite material is 27.1% and the composite material reaches fire retardant grade. Using sodium dodecyl sulfate and OP-10 as surface dispersants, the surface of Sb2O3 powders can not be coated completely. The particle size of Sb2O3 powders are 100nm and 150nm, respectively, The Sb2O3 powders have poor dispersion in the PVC matrix, and even some agglomerating phenomena took place. The oxygen index of Sb2O3/PVC composite materials are 24.7% and 25.3%, respectively, containing 1.26% Sb2O3 powders in Sb2O3/PVC composite material. The materials don't achieve flame retardant level.
KIM H W , KIM H S , NA H G , et al. Growth of Sb2O3 sub-micron rods by the thermal evaporation of a mixture of Zn and Sb powders[J]. Ceramics International, 2011, 37 (2): 593- 598.
SI M M , HAO J W , XU L S , et al. Analysis of nano-Sb2O3 in flame retardancy application[J]. China Plastics, 2013, 27 (8): 1- 7.
CHEN X S , XU G Z , ZHANG S , et al. Improving the flame retardancy of the polypropylene/aramid fiber composites by the introduction of decabromodiphenyl ethane and antimony trioxide[J]. Journal of Applied Polymer Science, 2013, 127 (2): 1446- 1453.
LI N , XIA Y , MAO Z W , et al. Influence of antimony oxide on flammability of polypropylene/intumescent flame retardant system[J]. Polymer Degradation and Stability, 2012, 97 (9): 1737- 1744.
QU H Q , WU W H , ZHENG Y J , et al. Synergistic effects of inorganic tin compounds and Sb2O3 on the thermal properties and flame retardancy of flexible poly(vinyl-chloride)[J]. Fire Safety Journal, 2011, 46 (7): 462- 467.
MIRDAMADIAN Z , GHANBARI D . Synergistic effect between Sb2O3 nanopartics-trichloromelamine and carbon nanotube on the flame retardancy and thermal stability of the cellulose acetate[J]. J Clust Sci, 2014, (25): 925- 936.
SI M M , FENG J , HAO J W , et al. Synergistic flame retardant effects and mechanisms of nano-Sb2O3 in combination with aluminum phosphinate in poly(ethylene terephthalate)[J]. Polymer Degradation and Stability, 2014, 100, 70- 78.
LI J F , YANG B J , WANG B N , et al. Study of flame retardant property of flexible PVC added with nano magnesium ferrite[J]. Anhui Chemical Industry, 2011, 37 (5): 26- 28.
DU G X , DING H , WANG B K , et al. Surface modification of super-fine magnesium hydroxide powder and it's flame-retardant treatment of flexible PVC[J]. Material Science Forum, 2009, 610-613, 165- 170.
LIU L , WU W H , XUE H H , et al. A series of metal molybdates flame-retardants and smoke suppressants for flexible PVC[J]. Advanced Materials Research, 2013, 634-638, 1881- 1885.
QU H Q , WU W H , XIE J X , et al. Zinc hydroxystannate-coated metal hydroxides as flame retardant and smoke suppression for flexible poly vinyl chloride[J]. Fire and Material, 2009, 33 (4): 201- 210.
XU J L , ZHANG L , ZHOU S G , et al. Influences of surface modification agent on the preparation of nano-Sb2O3 by the method of ball milling[J]. Rare Metal Materials Engineering, 2014, 43 (12): 3003- 3007.
YE J D , XIAO F , WANG X P , et al. Role of sodium dodecyl sulfate in de-agglomeration of hydroxyapatite powder synthesized by chemical precipitation method[J]. Journal of Function Material, 2005, 36 (10): 1594- 1596.